<template>
  <div>
    <h1>当前求和: {{ $store.state.sum }} </h1>
    <!-- 可以使用 :value绑定方式，绑定属性后的参数是作为js表达式解析，所以可以当作数值 -->
    <!-- 也可以使用v-model.number 转换 -->
    <select v-model.number="n">
      <option value="1">1</option>
      <option value="2">2</option>
      <option value="3">3</option>
    </select>
    <button @click="increment">+</button>
    <button @click="decrement">-</button>
    <button @click="incrementOdd">当前求和为奇数再加</button>
    <button @click="incrementWait">等一等再加</button>
  </div>
</template>

<script>
export default {
  name: "Count",
  data() {
    return {
      n: 1,
    }
  },
  mounted() {
    // console.log("count:", this)

  },
  methods: {
    increment() {
      this.$store.dispatch('jia', this.n)
    },
    decrement() {
      this.$store.dispatch('jian', this.n)
    },
    incrementOdd() {
      this.$store.dispatch('jiaOdd', this.n)
    },
    incrementWait() {
      this.$store.dispatch('jiaWait', this.n)
    },
  }
}

</script>

<style scoped lang="css">
button {
  margin-left: 5px;
}
</style>